Double-sided puzzle



FIG. 1 is a front elevational view of a double-sided puzzle showing my new design;

FIG. 2 is a partially exploded front elevational view thereof;

FIG. 3 is a partially exploded rear elevational view thereof;

FIG. 4 is a right side elevational view of a typical square puzzle piece, show separately for clarity of illustration, the left side being a mirror image;

FIG. 5 is a front elevational view of a typical triangular puzzle piece, shown separately for clarity of illustration;

FIG. 6 is a left side elevational view of a typical triangular puzzle piece, shown separately for clarity of illustration; and,

FIG. 7 is a right side elevational view of FIG. 6.

The broken line showing of portraits and scenery in FIGS. 1-3 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a double-sided puzzle, as shown and described. 